Hello Prototype_6492,
You could try using the Get Position action to get the position of the game object, use the Get VectorXYZ action to retrieve the Z position from that vector, use the float action to set your min and max of the Z position from the Get VectorXYZ action, set all of that information into another vector using the Set Vector action, and use that vector in the Set Position action on the game object.
I hope that makes sense.
Nog